Rollable Display Panel Layout for Stable Signal Input
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Rollable display devices face signal input abnormalities due to stress and bending issues during repeated extension and rolling, leading to display reliability concerns.
Innovation Solution
A display device design featuring a rollable and non-rollable portion with a supporting structure, substrate, and circuit board configuration that minimizes stress on signal input terminals by positioning the circuit board in the non-rollable portion and using a groove in the supporting structure to manage bending regions, ensuring consistent signal input during rolling and unrolling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the signal input terminal is arranged in the rollable portion of the extendable screen, then the extendable screen can be extended and rolled, but the signal input terminal is prone to be pulled to result in abnormal signal input
Solution Approach 1:
The display panel is divided into a rollable portion and a non-rollable portion. The signal input terminal is specifically arranged in the non-rollable portion, separating the flexible display area from the rigid signal input area. This segmentation allows the screen to be extended and rolled while keeping the signal input terminal in a stable position that is not subjected to bending stress.
2Adaptability or versatility
If the signal input terminal is disposed in a bending region of the extendable screen, then the screen can be rolled, but the stress in the bending region becomes overly large and the signal input is prone to be abnormal
Solution Approach 1:
The signal input terminal is extracted from the bending region and placed in the non-rollable portion of the display panel. This extraction removes the signal input terminal from the area subjected to high stress during rolling, thereby preventing signal input abnormalities while maintaining the rolling capability of the display screen.
3Ease of operation
If there is no bending part in the rollable portion after being extended, then the extendable screen can be fully unrolled, but it is prone to cause the end to be squeezed by stress to result in abnormalities
Solution Approach 1:
A bending part is preliminarily designed and constructed in the non-rollable portion of the display panel, adjacent to the rollable portion. This bending part serves as a stress buffer zone that is prepared in advance to absorb and distribute the stress when the rollable portion is fully extended, preventing stress concentration and potential abnormalities at the end of the display panel.
Data Source
AI summary
A display device includes a display panel including a rollable portion and a non-rollable portion. The display panel includes a supporting structure including a groove disposed on a first side of the supporting structure, a substrate disposed on a second side of the supporting structure and the first side opposite to the second side, and a circuit board fixed onto a back of the display panel. The non-rollable portion has a first region. A first region of the circuit board is joined to the first region of the non-rollable portion. The non-rollable portion has a first end and a second end. The first end is connected to the rollable portion. The second end is connected to the circuit board.